Virginia Department of Transportation road crews are working around the clock to treat roads and bridges and attempt to clear them of ice and snow.

“We were out all night treating the roads and plowing,” said VDOT spokeswoman Marshall Herman on Wednesday morning.

VDOT road crews managed to get to most roads, both state and county, Tuesday night into Wednesday morning, and are revisiting those roads to clear snow and treat for ice. VDOT maintains roads in most counties in the state, including those in Hampton Roads.

Herman said crews did not encounter large accumulations of snow in most of the region, but “because of wind gusts we had drifting snow.”

Crews have switched from de-icing compounds used on Tuesday to salt and sand as they treat roads, she added. De-icing compounds, which were used to pre-treat roads in advance of the winter storm, have limited effectiveness when temperatures drop into the teens.

Herman said VDOT expects temperatures to stay low, and cautions drivers “if they don’t have to go out and drive, don’t.” Drivers should be particularly careful on bridges, overpasses, on and off ramps and shaded roadways as those are most likely to have icy patches.